/*
 * Copyright (C) 2007-2015 FBReader.ORG Limited <contact@fbreader.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

package org.geometerplus.zlibrary.core.options;

import java.util.*;

import org.geometerplus.zlibrary.core.util.MiscUtil;

public class ZLStringListOption extends ZLOption {
    private final String myDelimiter;
    private List<String> myValue;
    private String myStringValue;

    public ZLStringListOption(String group, String optionName, List<String> defaultValue, String delimiter) {
        super(group, optionName, MiscUtil.join(defaultValue, delimiter));
        myDelimiter = delimiter;
    }

    public ZLStringListOption(String group, String optionName, String defaultValue, String delimiter) {
        this(
                group, optionName, defaultValue != null
                        ? Collections.singletonList(defaultValue)
                        : Collections.<String>emptyList(),
                delimiter
        );
    }

    public List<String> getValue() {
        final String stringValue = getConfigValue();
        if (!stringValue.equals(myStringValue)) {
            myStringValue = stringValue;
            myValue = MiscUtil.split(stringValue, myDelimiter);
        }
        return myValue;
    }

    public void setValue(List<String> value) {
        if (value == null) value = Collections.emptyList();
        if (value.equals(myValue)) return;
        myValue = new ArrayList<String>(value);
        myStringValue = MiscUtil.join(value, myDelimiter);
        setConfigValue(myStringValue);
    }
}
